Method: 1. Add salt, turmeric powder and sambar powder to tamarind extract. 2. Place it over medium flame. 3. Drain the soya beans and add to the tamarind. 4. Bring to a boil. 5. Heat little oil in a frying pan. 6. Fry the tempering ingredients for 30 to 45 seconds. 7. Add the onions and saute for another 30 seconds. 8. Add to the sambar and stir well. 9. Simmer for a minute and remove. 10. Serve hot.